Tools for Gridcrash is an interesting PDF that contains a lot of interesting things the aspiring doomer will find useful.

Finance

For a quick intro to the magic that is fractional-reserve banking, here’s a short parable.

Food

The Zen Backpacking Stoves site contains lots of plans for making your own small, lightweight stoves that will run on a variety of fuels. For a stove more suited to heating a small building, check out the Winiarski Rocket stove (new link). There’s a video of making a rocket stove here.SolarCooking.org is a nice resource for using sun ovens.